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Solar microflares are ubiquitous in the solar corona, yet their driving mechanisms remain a subject of ongoing debate. Using high-resolution coronal observations from the Solar Orbiter's Extreme Ultraviolet Imager (EUI), we identified about…

太阳与恒星天体物理 · 物理学 2025-03-17 Qingmei Wang , Yi Bi , Hongfei Liang , Jiayan Yang , Liufan Gong

Coronal plumes are long, ray-like, open structures, which have been considered as possible sources for the solar wind. Their origin in the largely unipolar coronal holes has long been a mystery. Earlier spectroscopic and imaging…

太阳与恒星天体物理 · 物理学 2022-07-06 Pankaj Kumar , Judith T. Karpen , Vadim M. Uritsky , Craig E. Deforest , Nour E. Raouafi , C. Richard DeVore

We report observations of homologous coronal jets and their coronal mass ejections (CMEs) observed by instruments onboard the Solar Dynamics Observatory (SDO) and Solar and Heliospheric Observatory (SOHO) spacecraft. The homologous jets…

太阳与恒星天体物理 · 物理学 2016-05-25 Navdeep K. Panesar , Alphonse C. Sterling , Ronald L. Moore

A small blowout jet was observed at the boundary of the south polar coronal hole on 2011 February 8 at around 21:00 UT. Images from the Atmospheric Imaging Assembly (AIA) on board the Solar Dynamics Observatory (SDO) revealed an expanding…

太阳与恒星天体物理 · 物理学 2015-06-18 Peter R. Young , Karin Muglach

Coronal jets are eruptions identified by a collimated, sometimes twisted spire. They are small-scale energetic events compared with flares. Using multi-wavelength observations from the Solar Dynamics Observatory/Atmospheric Imaging Assembly…

太阳与恒星天体物理 · 物理学 2023-05-24 Jiahao Zhu , Yang Guo , Mingde Ding , Brigitte Schmieder

A set of 23 observations of coronal jet events that occurred in coronal bright points has been analyzed. The focus was on the temporal evolution of the mean brightness before and during coronal jet events. In the absolute majority of the…

We report a solar jet phenomenon associated with successive flares on November 10th 2014. These explosive events were involved with the satellite spots' emergence around a delta-type sunspot in the decaying active region NOAA 12205. The…

太阳与恒星天体物理 · 物理学 2017-10-11 Takahito Sakaue , Akiko Tei , Ayumi Asai , Satoru Ueno , Kiyoshi Ichimoto , Kazunari Shibata

We investigate the acceleration source of the impulsive solar energetic particle (SEP) events on 2007 January 24. Combining the in situ electron measurements and remote-sensing solar observations, as well as the calculated magnetic fields…

太阳与恒星天体物理 · 物理学 2013-05-27 C. Li , S. A. Matthews , L. van Driel-Gesztelyi , J. Sun , C. J. Owen

We report on the plasma properties of small-scale transient events identified in the quiet Sun, coronal holes and their boundaries. We use spectroscopic co-observations from SUMER/SoHO and EIS/Hinode combined with high cadence imaging data…

太阳与恒星天体物理 · 物理学 2015-06-05 M. S. Madjarska , Z. Huang , J. G. Doyle , S. Subramanian

Recent observations show that the buildup and triggering of minifilament eruptions that drive coronal jets result from magnetic flux cancelation at the neutral line between merging majority- and minority-polarity magnetic flux patches. We…

太阳与恒星天体物理 · 物理学 2018-11-28 Navdeep K. Panesar , Alphonse C. Sterling , Ronald L. Moore , Sanjiv K. Tiwari , Bart De Pontieu , Aimee A. Norton

Context. Solar jets play a role in the coronal heating and the supply of solar wind. Aims. This study calculated the energies of 23 small-scale jets emerging from a quiet-Sun region to investigate their contributions for coronal heating.…

太阳与恒星天体物理 · 物理学 2024-06-19 Fanpeng Shi , Dong Li , Zongjun Ning , Jun Xu , Yuxiang Song , Yuzhi Yang

Coronal Jets are transitory small-scale eruptions omnipresent in solar observations. Active regions jets produce significant perturbations on the ambient solar atmosphere and are believed to be generated by microflare reconnection. Multiple…

太阳与恒星天体物理 · 物理学 2019-03-13 Alin Razvan Paraschiv , Alina Donea

A variety of periodic phenomena have been observed in conjunction with large solar jets. We aim to find further evidence for {(quasi-)}periodic behaviour in solar jets and determine what the periodic behaviour can tell us about the…

太阳与恒星天体物理 · 物理学 2015-06-04 R. J. Morton , A. K. Srivastava , R. Erdélyi

We report on the Atmospheric Imaging Assembly (AIA) observations of plasma outflows originating in a coronal dimming during the 2015 April 28th filament eruption. After the filament started to erupt, two flare ribbons formed, one of which…

太阳与恒星天体物理 · 物理学 2021-01-20 Juraj Lörinčík , Jaroslav Dudík , Guillaume Aulanier , Brigitte Schmieder , Leon Golub

Coronal holes are areas on the Sun with open magnetic field lines. They are a source region of the solar wind, but how the wind emerges from coronal holes is not known. We observed a coronal hole using the Extreme Ultraviolet Imager on the…

Solar jets are an important field of study, as they may contribute to the mass and energy transfer from the lower to the upper atmosphere. We use the Interface Region Imaging Spectrograph (IRIS) and Solar Dynamic Observatory (SDO)…

太阳与恒星天体物理 · 物理学 2024-10-01 Myrto Koletti , Costis Gontikakis , Spiros Patsourakos , Kanaris Tsinganos

Small-scale eruptions could play an important role in coronal heating, generation of solar energetic particles (SEPs), and mass source of the solar wind. However, they are poorly observed, and their characteristics, distributions, and…

太阳与恒星天体物理 · 物理学 2024-10-24 Rui Wang , Ying D. Liu , Xiaowei Zhao , Huidong Hu

We present a comprehensive study of a series of recurrent jets that occurred at the periphery of the NOAA active region 12114 on 2014 July 7. These jets were found to share the same source region and exhibited rotational motions as they…

太阳与恒星天体物理 · 物理学 2020-01-08 Lei Lu , Li Feng , Ying Li , Dong Li , Zongjun Ning , Weiqun Gan

In this paper we present the first comprehensive statistical study of EUV coronal jets observed with the SECCHI imaging suites of the two STEREO spacecraft. A catalogue of 79 polar jets is presented, identified from simultaneous EUV and…

太阳与恒星天体物理 · 物理学 2015-05-13 G. Nistico , V. Bothmer , S. Patsourakos , G. Zimbardo

Coronal mass ejections (CMEs) were discovered in the early 1970s when space-borne coronagraphs revealed that eruptions of plasma are ejected from the Sun. Today, it is known that the Sun produces eruptive flares, filament eruptions, coronal…

太阳与恒星天体物理 · 物理学 2018-03-14 Lucie Green , Tibor Torok , Bojan Vrsnak , Ward Manchester , Astrid Veronig